256957140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{661}}^1$

素因数の和:734

約数の個数: 192

約数和(自身を含む): 854138880

約数和(自身を除く): 597181740

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 19, 20, 22, 30, 31, 33, 38, 44, 55, 57, 60, 62, 66, 76, 93, 95, 110, 114, 124, 132, 155, 165, 186, 190, 209, 220, 228, 285, 310, 330, 341, 372, 380, 418, 465, 570, 589, 620, 627, 660, 661, 682, 836, 930, 1023, 1045, 1140, 1178, 1254, 1322, 1364, 1705, 1767, 1860, 1983, 2046, 2090, 2356, 2508, 2644, 2945, 3135, 3305, 3410, 3534, 3966, 4092, 4180, 5115, 5890, 6270, 6479, 6610, 6820, 7068, 7271, 7932, 8835, 9915, 10230, 11780, 12540, 12559, 12958, 13220, 14542, 17670, 19437, 19830, 20460, 20491, 21813, 25118, 25916, 29084, 32395, 35340, 36355, 37677, 38874, 39660, 40982, 43626, 50236, 61473, 62795, 64790, 72710, 75354, 77748, 81964, 87252, 97185, 102455, 109065, 122946, 125590, 129580, 138149, 145420, 150708, 188385, 194370, 204910, 218130, 225401, 245892, 251180, 276298, 307365, 376770, 388740, 389329, 409820, 414447, 436260, 450802, 552596, 614730, 676203, 690745, 753540, 778658, 828894, 901604, 1127005, 1167987, 1229460, 1352406, 1381490, 1557316, 1657788, 1946645, 2072235, 2254010, 2335974, 2704812, 2762980, 3381015, 3893290, 4144470, 4282619, 4508020, 4671948, 5839935, 6762030, 7786580, 8288940, 8565238, 11679870, 12847857, 13524060, 17130476, 21413095, 23359740, 25695714, 42826190, 51391428, 64239285, 85652380, 128478570, 256957140]

約数ペア:

[(1, 256957140), (2, 128478570), (3, 85652380), (4, 64239285), (5, 51391428), (6, 42826190), (10, 25695714), (11, 23359740), (12, 21413095), (15, 17130476), (19, 13524060), (20, 12847857), (22, 11679870), (30, 8565238), (31, 8288940), (33, 7786580), (38, 6762030), (44, 5839935), (55, 4671948), (57, 4508020), (60, 4282619), (62, 4144470), (66, 3893290), (76, 3381015), (93, 2762980), (95, 2704812), (110, 2335974), (114, 2254010), (124, 2072235), (132, 1946645), (155, 1657788), (165, 1557316), (186, 1381490), (190, 1352406), (209, 1229460), (220, 1167987), (228, 1127005), (285, 901604), (310, 828894), (330, 778658), (341, 753540), (372, 690745), (380, 676203), (418, 614730), (465, 552596), (570, 450802), (589, 436260), (620, 414447), (627, 409820), (660, 389329), (661, 388740), (682, 376770), (836, 307365), (930, 276298), (1023, 251180), (1045, 245892), (1140, 225401), (1178, 218130), (1254, 204910), (1322, 194370), (1364, 188385), (1705, 150708), (1767, 145420), (1860, 138149), (1983, 129580), (2046, 125590), (2090, 122946), (2356, 109065), (2508, 102455), (2644, 97185), (2945, 87252), (3135, 81964), (3305, 77748), (3410, 75354), (3534, 72710), (3966, 64790), (4092, 62795), (4180, 61473), (5115, 50236), (5890, 43626), (6270, 40982), (6479, 39660), (6610, 38874), (6820, 37677), (7068, 36355), (7271, 35340), (7932, 32395), (8835, 29084), (9915, 25916), (10230, 25118), (11780, 21813), (12540, 20491), (12559, 20460), (12958, 19830), (13220, 19437), (14542, 17670)]